The document summarizes Celanese Corporation's 1Q 2009 earnings conference call. It provides an overview of the participants in the call and includes forward-looking statements and information on non-GAAP measures. The financial highlights show a year-over-year decline in net sales, operating profit, and adjusted EPS due to lower volumes and pricing pressure. Segment results are also down across most businesses compared to prior year. However, the company maintained a strong cash position and generated positive adjusted free cash flow for the quarter.

1. Celanese 1Q 2009 Earnings
Conference Call / Webcast
Tuesday, April 28, 2009 10:00 a.m. ET
Dave Weidman, Chairman and CEO
Steven Sterin, Senior Vice President and CFO
1

2. Forward Looking Statements, Reconciliation and Use of Non-
GAAP Measures to U.S. GAAP
Forward-Looking Statements
This presentation may contain “forward-looking statements,” which include information concerning the company’s plans, objectives, goals, strategies, future revenues or performance, capital
expenditures, financing needs and other information that is not historical information. When used in this release, the words “outlook,” “forecast,” “estimates,” “expects,” “anticipates,” “projects,” “plans,” “intends,”
“believes,” and variations of such words or similar expressions are intended to identify forward-looking statements. All forward-looking statements are based upon current expectations and beliefs and various
assumptions. There can be no assurance that the company will realize these expectations or that these beliefs will prove correct. There are a number of risks and uncertainties that could cause actual results to
differ materially from the forward-looking statements contained in this release. Numerous factors, many of which are beyond the company’s control, could cause actual results to differ materially from those
expressed as forward-looking statements. Certain of these risk factors are discussed in the company’s filings with the Securities and Exchange Commission. Any forward-looking statement speaks only as of the
date on which it is made, and the company undertakes no obligation to update any forward-looking statements to reflect events or circumstances after the date on which it is made or to reflect the occurrence of
anticipated or unanticipated events or circumstances.
Reconciliation of Non-U.S. GAAP Measures to U.S. GAAP
This presentation reflects five performance measures, operating EBITDA, affiliate EBITDA, adjusted earnings per share, net debt and adjusted free cash flow, as non-U.S. GAAP measures. The
most directly comparable financial measure presented in accordance with U.S. GAAP in our consolidated financial statements for operating EBITDA is operating profit; for affiliate EBITDA is equity in net earnings of
affiliates; for adjusted earnings per share is earnings per common share-diluted; for net debt is total debt; and for adjusted free cash flow is cash flow from operations.
Use of Non-U.S. GAAP Financial Information
►Operating EBITDA, a measure used by management to measure performance, is defined as operating profit from continuing operations, plus equity in net earnings from affiliates, other income and depreciation and
amortization, and further adjusted for other charges and adjustments. We may provide guidance on operating EBITDA and are unable to reconcile forecasted operating EBITDA to a GAAP financial measure
because a forecast of Other Charges and Adjustments is not practical. Our management believes operating EBITDA is useful to investors because it is one of the primary measures our management uses for its
planning and budgeting processes and to monitor and evaluate financial and operating results. Operating EBITDA is not a recognized term under U.S. GAAP and does not purport to be an alternative to operating
profit as a measure of operating performance or to cash flows from operating activities as a measure of liquidity. Because not all companies use identical calculations, this presentation of operating EBITDA may not
be comparable to other similarly titled measures of other companies. Additionally, operating EBITDA is not intended to be a measure of free cash flow for management’s discretionary use, as it does not consider
certain cash requirements such as interest payments, tax payments and debt service requirements nor does it represent the amount used in our debt covenants.
►Affiliate EBITDA, a measure used by management to measure performance of its equity investments, is defined as the proportional operating profit plus the proportional depreciation and amortization of its equity
investments. Affiliate EBITDA, including Celanese Proportional Share of affiliate information on Table 8, is not a recognized term under U.S. GAAP and is not meant to be an alternative to operating cash flow of the
equity investments. The company has determined that it does not have sufficient ownership for operating control of these investments to consider their results on a consolidated basis. The company believes that
investors should consider affiliate EBITDA when determining the equity investments’ overall value in the company.
►Adjusted earnings per share is a measure used by management to measure performance. It is defined as net earnings (loss) available to common shareholders plus preferred dividends, adjusted for other charges
and adjustments, and divided by the number of basic common shares, diluted preferred shares, and options valued using the treasury method. We may provide guidance on an adjusted earnings per share basis and
are unable to reconcile forecasted adjusted earnings per share to a GAAP financial measure without unreasonable effort because a forecast of Other Items is not practical. We believe that the presentation of this
non-U.S. GAAP measure provides useful information to management and investors regarding various financial and business trends relating to our financial condition and results of operations, and that when U.S.
GAAP information is viewed in conjunction with non-U.S. GAAP information, investors are provided with a more meaningful understanding of our ongoing operating performance. This non-U.S. GAAP information is
not intended to be considered in isolation or as a substitute for U.S. GAAP financial information.
►The tax rate used for adjusted earnings per share approximates the midpoint in a range of forecasted tax rates for the year, excluding changes in uncertain tax positions, discrete items and changes in
management’s assessments regarding the ability to realize deferred tax assets. We analyze this rate quarterly and adjust if there is a material change in the range of forecasted tax rates; an updated forecast would
not necessarily result in a change to our tax rate used for adjusted earnings per share. The adjusted tax rate is an estimate and may differ significantly from the tax rate used for U.S. GAAP reporting in any given
reporting period. It is not practical to reconcile our prospective adjusted tax rate to the actual U.S. GAAP tax rate in any future period.
►Net debt is defined as total debt less cash and cash equivalents. We believe that the presentation of this non-U.S. GAAP measure provides useful information to management and investors regarding changes to
the company’s capital structure. Our management and credit analysts use net debt to evaluate the company's capital structure and assess credit quality. This non-U.S. GAAP information is not intended to be
considered in isolation or as a substitute for U.S. GAAP financial information.
►Adjusted free cash flow is defined as cash flow from operations less capital expenditures, other productive asset purchases, operating cash from discontinued operations and certain other charges and adjustments.
We believe that the presentation of this non-U.S. GAAP measure provides useful information to management and investors regarding changes to the company’s cash flow. Our management and credit analysts use
adjusted free cash flow to evaluate the company’s liquidity and assess credit quality. This non-U.S. GAAP information is not intended to be considered in isolation or as a substitute for U.S. GAAP financial
information.
Results Unaudited
The results presented in this presentation, together with the adjustments made to present the results on a comparable basis, have not been audited and are based on internal financial data furnished to management.
Quarterly results should not be taken as an indication of the results of operations to be reported for any subsequent period or for the full fiscal year.
2

3. Dave Weidman
Chairman and Chief Executive Officer
3

4. Celanese Corporation 1Q 2009
highlights
1st Qtr 2009 1st Qtr 2008
in millions (except EPS)
Net Sales $1,846
$1,146
Operating Profit $234
$27
Adjusted EPS $1.06
$0.08
Operating EBITDA $381
$136
First Quarter 2009:
► Strong cash position with positive adjusted free cash flow
► Inventory accounting impact of ~$0.15/share1 included in Adjusted
EPS
$32 million inventory accounting impact tax effected at 29% divided by 155.6 million diluted shares for the three months ended March 31, 2009.
1
4

5. Peak and trough relative performance
Relative Peak versus Trough Quarter – Operating EBIDTA
Acetyl Intermediates
Advanced Engineered Materials
Industrial Specialties
Consumer Specialties
Other Activities
18 – 20%
Operating EBITDA
Impacting Factors
Seasonality
►
13 – 15%
22 – 25%
18 – 20%
Inventory accounting
►
8 – 10% 10 – 12%
impacts
21 – 23%
20 – 22%
Customer destocking
►
Normalized Normalized
Peak Conditions Trough Conditions
Trough defined as four quarters of sustained -1% to 1% global GDP
5 Note: Earnings from strategic affiliates included in total Operating EBITDA amounts but excluded from margin % amounts

6. Steven Sterin
Senior Vice President and CFO
6

7. Celanese Corporation financial
highlights
1st Qtr 2009 1st Qtr 2008
in millions (except EPS)
Net Sales $1,846
$1,146
Operating Profit/(Loss) $234
$27
Net Earnings/(Loss) $145
($20)
Other Charges/Adjustments $33 $22
Adjusted EPS $1.06
$0.08
Effective Tax Rate 29% 26%
Diluted Share Basis 155.6 167.3
Operating EBITDA $381
$136
1Q 2009
1Q 2009 net sales decreased 38%
►
► Lower volumes on weak global demand
► Lower pricing for acetyl products
Operating profit decreased to $27 million
►
► Net sales more than offset lower raw material,
energy, and spending costs
Adjusted EPS fell to $0.08/share
►
Operating EBITDA decreased to $136 million
►
7

8. Consumer Specialties
1st Qtr 2009 1st Qtr 2008
in millions
Net Sales $282
$266
Operating EBITDA $65
$81
First Quarter 2009:
► Net sales decreased as higher pricing only partially offset lower volumes
► Volume decline due to the timing of customer contract negotiations and lower
acetate flake sales
► Operating EBITDA improvement due to the higher pricing, favorable currency
and lower spending and energy costs
Outlook:
► Stable volumes expected in 2009
► Increased dividend expected in 2Q 2009 from Acetate China affiliates
► Continued sustained earnings performance with ongoing decreases in
spending and energy costs
8

9. Industrial Specialties
1st Qtr 2009 1st Qtr 2008
in millions
Net Sales $365
$242
Operating EBITDA $36
$26
First Quarter 2009:
► Net sales decrease primarily driven by lower volumes in Europe and North
America, as well as the effect of the AT Plastics force majeure
► Lower raw material and energy costs, along with the benefits of the
company’s fixed spending reductions, more than offset slightly lower pricing
► Inventory accounting impacts ($6 million) and lower volumes are the primary
reasons for decrease in Operating EBITDA
Outlook:
► Volumes in North America and Europe remain challenged
► Continued success in Asia help offset volume weakness
► Raw material and energy cost reductions should positively impact margins
9

10. Advanced Engineered Materials
1st Qtr 2009 1st Qtr 2008
in millions
Net Sales $294
$165
Operating EBITDA $60
$0
First Quarter 2009:
► Net sales decreased as higher pricing could not offset lower volumes and
currency impacts
► Volume decreases were driven by automotive production in the U.S. and
Europe and continued inventory destocking in consumer electronic
applications.
► Operating EBITDA decline was due to lower volumes, inventory accounting
impacts ($5 million) and lower affiliate earnings
Outlook:
► Continued volume pressures due to further reductions in US and Europe
auto builds
► Easing raw material and energy costs coupled with sustained pricing should
positively impact margins
10

11. Acetyl Intermediates
1st Qtr 2009 1st Qtr 2008
in millions
Net Sales $1,096
$572
Operating EBITDA $246
$48
First Quarter 2009:
► Decrease in net sales due to substantial volume declines and lower pricing
► Pricing declined as the industry experienced lower utilization rates on
reduced global demand, particularly in Europe and the Americas.
► Lower raw material and energy costs could not offset lower volumes and
inventory accounting impacts ($21 million)
Outlook:
► Volumes expected to be at reduced levels performing at normalized trough
profile
► Margins should be sustained in 2009 due to advantaged technology and
cost position
11

12. Affiliate Performance
1Q 2009: Earnings impact of $4 million decreased versus prior year due to lower
►
dividends from the company’s Ibn Sina cost affiliate and lower earnings from the
Advanced Engineered Materials equity affiliates
► Outlook:
►Increased dividend year over year expected in 2Q 2009 from Acetate China
affiliates
►Other cost and equity affiliates challenged by weakened global demand
environment
Income Statement Cash Flows
100 100
75 75
$ millions
$ millions
50 50
25 25
0
0
1Q 2008 1Q 2009
1Q 2008 1Q 2009
Earnings - Equity Investments Dividends - Cost Investments Dividends - Equity Investments Dividends - Cost Investments
12

13. Solid cash generation
Adjusted Free Cash Flow
1st Qtr 2009 1st Qtr 2008
$ in millions
Net cash provided by operating activities $166
$199
Adjustments to operating cash for discontinued operations $1
($1)
Net cash provided by operating activities from continuing operations $167
$198
Less: Capital expenditures $81
$56
Less: Other charges and adjustments1 $19
$73
Adjusted Free Cash Flow $69 $67
Factors contributing to cash generation during first quarter 2009:
► Lower cash taxes
► Favorable trade working capital
► Reduced capital expenditures
Amounts primarily associated with the Kelsterbach relocation and the cash outflows for purchases of other productive assets that are classified as ‘investing activities’ for U.S.
1
13
GAAP purposes.

14. Celanese capital structure
Primary Components Structure Characteristics
Sources of Liquidity
Cash - $1,150 million
Credit Linked Revolver - Cost
$143 million
Revolver - $650 million
Stability
Debt Obligations
Term Loan - $2.8 billion
Other Debt Obligations -
Flexibility
$706 million
Net Debt - $2.3 billion
Strong balance sheet provides flexibility and stability in current environment
14

15. Appendix
15

16. 1Q 2009 Other Charges and Other Adjustments
by Segment
$ in millions AEM CS IS AI Other Total
Employee termination benefits 7 - 2 6 9 24
Ticona Kelsterbach relocation 3 - - - - 3
Clear Lake insurance recoveries - - - (6) - (6)
Plumbing insurance recoveries (1) - - - - (1)
Asset impairments - - - 1 - 1
Other - - - - - -
Total other charges 9 - 2 1 9 21
Business optimization - - 1 - 1 2
Ticona Kelsterbach relocation 1 - - - - 1
Plant closures - - - 4 - 4
Other - - - - 5 5
Total other adjustments 1 - 1 4 7 12
Total other charges and 10 - 3 5 15 33
other adjustments
16

17. Reg G: Reconciliation of Adjusted EPS
Adjusted Earnings (Loss) Per Share - Reconciliation of a Non-U.S. GAAP Measure
Three Months Ended
March 31,
2009 2008
(in $ millions, except per share data)
218
Earnings (loss) from continuing operations before tax (16)
Non-GAAP Adjustments:
1
Other charges and other adjustments 22
33
240
Adjusted Earnings (loss) from continuing operations before tax 17
2
Income tax (provision) benefit on adjusted earnings (62)
(5)
Noncontrolling interests -
-
Adjusted Earnings (loss) from continuing operations 12 178
Preferred dividends (3)
(3)
Adjusted net earnings (loss) available to common shareholders 9 175
Add back: Preferred dividends 3
3
Adjusted net earnings (loss) for adjusted EPS 12 178
Diluted shares (millions) 3
Weighted average shares outstanding 152.0
143.5
Assumed conversion of preferred shares 12.0
12.1
Assumed conversion of restricted stock units 0.5
-
2.8
Assumed conversion of stock options -
Total diluted shares 167.3
155.6
Adjusted EPS 0.08 1.06
1
See Table 7 for details
2
The adjusted tax rate for the three months ended March 31, 2009 is 29% based on the forecasted adjusted tax rate for 2009.
3
Potentially dilutive shares are included in the adjusted earnings per share calculation when adjusted earnings are positive.
4
The impact of inventory accounting adjustments on Adjusted EPS is $0.15 calculated as $32 million tax effected at 29% divided by 155.6
million diluted shares for the three months ended March 31, 2009.
17

18. Reg G: Reconciliation of Net Debt
Net Debt - Reconciliation of a Non-U.S. GAAP Measure
March 31, December 31,
2009 2008
(in $ millions)
Short-term borrowings and current
installments of long-term debt - third party and affiliates 233
195
Long-term debt 3,300
3,274
Total debt 3,469 3,533
Less: Cash and cash equivalents 676
1,150
Net Debt 2,319 2,857
18

19. Reg G: Other Charges and Other Adjustments
Reconciliation of Other Charges and Other Adjustments
Other Charges:
Three Months Ended
March 31,
(in $ millions) 2009 2008
Employee termination benefits 7
24
Plant/office closures 7
-
Ticona Kelsterbach plant relocation 2
3
Clear Lake insurance recoveries -
(6)
Insurance recoveries associated with plumbing cases -
(1)
Asset impairments -
1
Total 21 16
Other Adjustments: 1
Three Months Ended Income
March 31, Statement
Classification
(in $ millions) 2009 2008
9
Business optimization SG&A
2
(2)
Ticona Kelsterbach plant relocation Cost of sales
1
-
Plant closures Cost of sales
4
(1)
Other Various
5
12 6
Total
33 22
Total other charges and other adjustments
1
These items are included in net earnings but not included in other charges.
19

20. 20
Segment Data and Reconciliation of Operating Profit (Loss) to Operating EBITDA -
a Non-U.S. GAAP Measure
Three Months Ended
March 31,
(in $ millions) 2009 2008
Net Sales
165
Advanced Engineered Materials 294
266
Consumer Specialties 282
242
Industrial Specialties 365
572
Acetyl Intermediates 1,096
1
Other Activities - -
(99)
Intersegment eliminations (191)
Total 1,146 1,846
Operating Profit (Loss)
(19)
Advanced Engineered Materials 30
66
Consumer Specialties 50
10
Industrial Specialties 17
12
Acetyl Intermediates 177
1
Other Activities (42) (40)
Total 27 234
Equity Earnings, Cost - Dividend Income and Other Income (Expense)
(8)
Advanced Engineered Materials 9
3
Consumer Specialties -
-
Industrial Specialties -
4
Acetyl Intermediates 29
1
Other Activities 6 4
Total 5 42
Other Charges and Other Adjustments 2
10
Advanced Engineered Materials 1
-
Consumer Specialties 1
3
Industrial Specialties 5
5
Acetyl Intermediates 8
1
Other Activities 15 7
Total 33 22
Depreciation and Amortization Expense
17
Advanced Engineered Materials 20
12
Consumer Specialties 14
13
Industrial Specialties 14
27
Acetyl Intermediates 32
1
Other Activities 3
2
Total 71 83
Reg G: Reconciliation of Operating EBITDA
Operating EBITDA
-
Advanced Engineered Materials 60
81
Consumer Specialties 65
26
Industrial Specialties 36
48
Acetyl Intermediates 246
1
Other Activities (19) (26)
Total 136 381
1
Other Activities primarily includes corporate selling, general and administrative expenses and the results from captive
insurance companies.
2
See Table 7.

21. Reg G: Equity Affiliate Preliminary Results and
Celanese Proportional Share - Unaudited
4
Equity Affiliate Preliminary Results - Celanese Proportional Share - Unaudited
Equity Affiliate Preliminary Results - Total - Unaudited
Three Months Ended
Three Months Ended
(in $ millions) March 31,
(in $ millions) March 31, 2009 2008
2009 2008 Net Sales
Net Sales Ticona Affiliates 163
80
Ticona Affiliates1 Infraserv 176
355 163
172
Total
Infraserv2 243 339
548
510
Total 682 903 Operating Profit
Ticona Affiliates 15
(8)
Operating Profit Infraserv 6
8
Ticona Affiliates 33 Total
(19) - 21
Infraserv 19
25 Depreciation and Amortization
Total 6 52 Ticona Affiliates 10
12
Infraserv 9
7
Depreciation and Amortization
Total 19 19
Ticona Affiliates 22
27
Affiliate EBITDA3
Infraserv 27
23
Ticona Affiliates 25
4
Total 50 49
Infraserv 15
15
Total 19 40
3
Affiliate EBITDA
Ticona Affiliates 55 Equity in net earnings of affiliates (as reported on the Income Statement)
8
Ticona Affiliates 9
(8)
Infraserv 46
48
Infraserv 1
6
Total 56 101
Total (2) 10
Net Income
Affiliate EBITDA in excess of Equity in net earnings of affiliates5
Ticona Affiliates 19
(16)
Ticona Affiliates 16
12
Infraserv (2)
19
Infraserv 14
9
Total 3 17 Total 21 30
Net Debt Net Debt
Ticona Affiliates 85
Ticona Affiliates 185 118
260
Infraserv 102
177
Infraserv 325
562
Total 295 187
Total 822 510
1
Ticona Affiliates includes Polyplastics (45% ownership), Korean Engineering Plastics (50%), Fortron Industries (50%), and Una SA (50%)
2
Infraserv includes Infraserv Entities valued as equity investments (Infraserv Höchst - 31% ownership, Infraserv Gendorf - 39% and Infraserv Knapsack 27%)
3
Affiliate EBITDA is the sum of Operating Profit and Depreciation and Amortization, a non-U.S. GAAP measure
4
Calculated as the product of figures from the above table times Celanese ownership percentage
5
Product of Celanese proportion of Affiliate EBITDA less Equity in net earnings of affiliates; not included in Celanese operating EBITDA
21